baber/WOPTO huggingface dataset:
Patent GB-818913-A (GB)
Title: Improvements in or relating to sound recording and reproducing apparatus
Inventor: MINNS ARCHIBALD ERIC HUMPHREY
IPC: G11B3/08
Filed: 1955-02-18
Abstract: 818,913. Gramophone turntables. ELECTRIC & MUSICAL INDUSTRIES Ltd. Jan. 31, 1956 [Feb. 18, 1955], No. 4860/55. Class 40 (2). [Also in Groups XIX and XX] Stroboscopic markings 15 provided on the underside of a gramophone turntable 5 and illuminated by lamps 12 so as to give a strobo-. scopic effect when the table rotates at a predetermined speed, are viewed through an optical system 18, provided beneath the baseplate 2, which transmits an image of said markings to a viewing aperture 24 disposed beyond the periphery of the turntable. The threespeed turntable shown has three sets of suitably spaced markings 15 ... 17 arranged to inidcate the required speeds and the optical system comprises a tube 18 carrying mirrors 19, 20 and connected to a sleeve 21, forming the viewing aperture, which is rotatably mounted to permit the tube 18 to be moved angularly to view the sets of markings 15 ... 17 separately. The member 18 may be coupled to an actuating arm for a change speed gear in the turntable driving means so that the appropriate speed is selected when the member 18 is moved to view each set of markings 15... 17. The Provisional Specification describes a device for centring records with small and large centre holes, the turntable shaft being extended to centre the small-holed records whilst spring fingers arranged in recesses in the turntable and moved out of their operative position by the weight of small-holed records become operative to centre large-holed records. Specifications 696,481, [Group XXIV], and 698,919 are referred to.
Patent GB-1069999-A (GB)
Title: Blowing agent inhibitor composition
IPC: D06N3/06
Filed: 1964-09-04
Abstract: A composition for application to a foamable resin composition containing a blowing agent comprises from 5 to 75% by weight of an inhibitor which substantially alters the decomposition temperature of the blowing agent in the area to which it is applied, a volatile liquid vehicle therefor, a pigment and a resin carrier for said pigment, said resin being present in the composition in less amount than the inhibitor. Suitable resin carriers are vinyl chloride-vinyl acetate copolymers.  Suitable inhibitors are organic acids and anhydrides, organic acid halides, polyhydric aromatic alcohols and ketones, and cyclic amines.  The compositions may also contain plasticizers.
Patent GB-291136-A (GB)
Title: An improved weeding machine
IPC: A01D33/06
Filed: 1927-02-22
Abstract: 291,136. Strand, H. W., and Persson, G. Feb. 22, 1927. Weed-cutting machines.-A machine for destroying weeds comprises means for tearing off the heads and for mutilating the stems. The head-removing appliances are carried bv arms 6 mounted on the axle 3 of the two travelling wheels and adjustable by means of a lever 17 and a locking-segment. They comprise blunt bars 12 carried by arms 11 on a shaft 10 driven by chain gearing and a clutch from the axle 3. The weeds are temporarily held in position by a comb 15 adjustably mounted in curved arms 13 projecting from the arms 6. The mutilating appliances consist of rows of spurs on a shaft 18 mounted in arms 7 pivoted on the axle 3 and adjustable by means of a lever 21 and a locking- segment. The spurs are staggered relatively to one another, and the shaft 18 is driven from the axle by chain and spur gearing and a clutch.
Patent GB-1078826-A (GB)
Title: Improvements in or relating to the treatment of work-pieces with beams of charged particles
IPC: H01J37/147
Filed: 1965-02-04
Abstract: 1,078,826. Cutting by electron beam. NIHON DENSHI KABUSHIKI KAISHA. Feb. 4, 1965 [Feb. 4, 1964], No. 4998/65. Heading B3V. [Also in Division H1] In an electron beam apparatus for boring or milling a workpiece in which the beam is deflected over the workpiece, a correction comprising three or more pairs of electric or magnetic poles is provided to compensate for distortion of the beam cross-section due to the deflection.
Patent GB-276242-A (GB)
Title: Improvements in or relating to taps and other screw-thread cutting tools
IPC: B23G5/06
Filed: 1927-02-22
Abstract: 276,242. Jackson, L. Mellersh-, (Jones & Lamson Machine Co.). Feb. 22, 1927. Chasers; taps.-In a screw-cutting tool the apex of one or more of the teeth is modified so as to cut a thread larger than the standard at the roots in order to allow for wear on the tool. In a tap for cutting United States' standard screwthreads, the apex of a tooth is extended as at 20, Fig. 4, the extension being at a more acute angle than the tooth itself and thus providing an amount of material which may be worn away to the dotted line 21 before the correct tooth profile is affected. In modifications, the sides of the extension may be substantially parallel as at 25 and may be carried to a point below the line x-x representing the outside diameter of the thread being cut, or alternatively the extension may lie wholly outside the normal thread, as shown in Fig. 5. The pitch diameter of the tap is also made slightly more than normal to allow for wear on the flanks of the teeth.
Patent GB-274373-A (GB)
Title: Improvements in and relating to electrically driven clocks
IPC: G04C3/06
Filed: 1927-02-22
Abstract: 274,373. Holden, F. Feb. 22, 1927. Electric clocks. - The balance 5 is electrioally maintained by a coil 14 on the balance staff 4, the circuit of this coil being completed through a contact on the staff which contacts with, and moves, a second pivoted contact. This second contact is returned to normal by a gravity - controlled pivoted member. The stationary magnet is a substantially rectangular frame of cobalt steel formed by plates 18, 19, end blocks 20, 21 and pole pieces 16, 17. The steel contains 30 per cent to 40 per cent of cobalt. The balance drives the hands through eccentric 41, fork 42 on arm 43, shaft 44, arm 45, pawl 46, ratchet 47, and gearing 48, 49. An arm 13 on the balance staff ciarries the first contact 24 which moves the second contact 25, rigid on a spindle 26 having a flat upon which bears a plate spring 29 rigid with a frame 30 oscillating about an horizontal axis. As the contact 24 moves the contact 25, an edge of the flat 28 compresses the spring 29 and rocks the frame 30. When the balance staff returns the weight of the frame 30 returns the shaft 26 to normal. The complete circuit for the coil is from source of current to spindle 4, lead 22, coil 14, conductor 23, contact 24 (insulated from spindle 4), contact 25, conductor 27 and to the other side of the source of current.
Patent GB-1451284-A (GB)
Title: Foil trays
IPC: B65D77/20
Filed: 1974-02-04
Abstract: 1451284 Foil trays BOWATER PACKAGING Ltd 14 Jan 1975 [4 Feb 1974] 05022/74 Addition to 1383076 Headings B8C and B8D An aluminium foil tray of the type described in the main Specification 1,383,076 has a lid 1 with a fold line 6 adjacent one of the portions 4 where the beading 2 of the tray is not folded down on to the lid. Downward pressure on the lid causes corner 5 to flex upwardly about the fold line 6 thus providing a pull tab to facilitate removal of the lid. The fold line may be as shown, V-shaped or arcuate across the corner of the rectangular tray or on a circular tray it may be chordal, V-shaped or arcuate.
Patent GB-711178-A (GB)
Title: Improvements in or relating to thermionic valve oscillation generators
IPC: H03B5/34
Filed: 1952-02-26
Abstract: 711,178. Valve generating circuits. GENERAL ELECTRIC CO., Ltd., and SIMPSON, A. I. F. Feb. 13, 1953 [Feb. 26, 1952], No. 5078/52. -Class 40 (6) A crystal controlled valve oscillator has the crystal 9 connected between the -control grid and a point on an impedance connected between an H.T. source and a further grid situated between the control grid and the anode, the output being derived 'from the anode and an automatic amplitude control voltage being applied to the control grid and obtained by rectifying a voltage proportional to the anode circuit voltage. The point on the further grid impedance is so chosen that the maximum safe potential across the crystal is not exceeded and the circuit may therefore be arranged to produce a large output without overdriving the crystal. The crystal shown comprises two 5‹, X cut plates bonded together and operating in a flexure mode, the internal electrode being connected to earth through a capacitor 11 which may be adjusted to vary the frequency of operation. The anode load comprises a circuit tuned to the fundamental or a harmonic frequency of the crystal. A delay voltage may be introduced into the circuit of the amplitude control rectifier by the alternative connection 23.
Patent GB-622706-A (GB)
Title: Improvements in and relating to the treatment of liquids with gases or vapours
IPC: B01J19/32
Filed: 1947-02-21
Abstract: 622,706. Contacting gases with liquids. DIXON, O. G., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Feb. 21, 1947, No. 5090. [Class 55 (ii)] Packing for apparatus wherein gases are brought into contact with liquids comprises a plurality of strips of woven material arranged in layers as shown. The strips may be arranged parallel or inclined to the stream of gas and may be assembled in the form of grids, e.g: in eggbox fashion, which may be staggered, offset or disposed at various angles to each other. The strips may have serrated or sinuous lower edges and the woven material may consist of wire fabric, wire gauze or other capillary materials, the apertures of which can be maintained completely sealed' by liquid. Specification 578,309 is referred to.
Patent GB-1420713-A (GB)
Title: Process for the preparation of immuno-suppressive antihuman lymphocyte sera
IPC: C12N5/078
Filed: 1974-02-05
Abstract: 1420713 Immuno-suppressive anti-human lymphocyte serum CHOAY SA 5 Feb 1974 [8 Feb 1973] 05205/74 Heading A5B Immuno-suppressive anti-human lymphocyte serum, free from anti-erythrocyte and antithrombocyte effects may be prepared by injecting an animal with an antigenic material comprised of the acellular supernatant of cultures of cells of long-term lines initiated from human lymphocytes and preferably cultured without receiving information other than that which is naturally specific to them, or of one or more fractions of said supernatant, which antigenic material causes the immunisation of the animal, and bleeding the treated animal and recovering the serum from the plasma separated from the collected blood. Each culture may be obtained from a single cell line. Preferably the serum comprises anti-human lymphocyte immunoglobulins G obtained by purification of the serum. The antigenic material used for immunising the animal may be prepared by seeding a suitable nutrient medium with long term line cells initiated from human lymphocytes and cultured without receiving information other than that which is naturally specific thereto, continuing the culture until the cell count has reached a value corresponding substantially to saturation of the medium employed, stopping the culture at this stage, centrifuging the culture and retaining the supernatant which constitutes the antigenic material. The anti-human lymphocyte immunoglobulins G are preferably isolated by purification of the blood plasma obtained after immunisation caused by injection of the supernatant utilising an acridine salt e.g. 2-ethoxy-6, 9-diamino acridine lactate, followed by a purification operation using ammonium sulphate and passage over an anion exchanger resin having a high fixation capacity, at a pH of from 6.5 to 8.5, and sterilisation of the thus-obtained solution.
Patent GB-588746-A (GB)
Title: Improvements in and relating to rotary valves for fluid-pressure engines
IPC: F01L7/10
Filed: 1945-03-02
Abstract: 588,746. Air compressors. SWAIN, F. E. March 2, 1945, No. 5217. [Class 8 (i)] [Also in Group XXVII] A hollow rotary valve preferably of spherical or exposed frusto-conical form is in continuous communication with the compressor cylinder through port 36 and has a pair of symmetrically arranged ports 37 communicating successively with inlet, exhaust, and ignition ports in the valve casing, the ports 37 having a total cross-sectional area transverse to the axis of rotation which is equal to or slightly less than that of port 36 so that the valve is sealed during compression wthout the use of thrust bearings. The enclosure for the valve is water-cooled and consists of a portion 25 integral with the cylinder and a detachable portion 26 containing the driving shaft 16, lubricated through pipes 23, 24. Specifications 19477/09, [Class 7 (vi)], and 560,332, [Group XXVII], are referred to.
Patent GB-621367-A (GB)
Title: Improvements in or relating to shower pipes
IPC: D21F1/32
Filed: 1947-02-22
Abstract: 621,367. Spray-producers. REISS, A. Feb. 22, 1947, No. 5234. [Class 69 (iii)] A pipe 1 carrying nozzles for distributing water and fibre, or other material likely to clog the pipe, is cleaned by inserting a brush 13 through an opening 5 in an end compartment 3 which is provided with a hinged flap 6 opening onwardly when the fluid pressure is reduced and capable of being closed tight by normal working pressure. A pressure gauge 4 is provided and a weight 7 assists the fluid pressure in maintaining the flap 6 in its closed position. An auxiliary outlet 8 is also provided opening tangentially from the periphery of the compartment 3 in order to impart a whirling motion to the water inside the pipe 1 to prevent fouling.
Patent GB-724558-A (GB)
Title: A process for the production of vinyl chloride polymers
IPC: C08F14/06
Filed: 1953-02-25
Abstract: In a process for the emulsion polymerization of vinyl chloride either alone or with one or more other compounds containing the group CH2=C<, the emulsifying agent is at least partly formed in situ during the course of the polymerization by reaction between an organic acid containing at least 8 carbon atoms in the hydrocarbon chain and a water-soluble base.  The organic acid may be lauric, palmitic, linoleic, stearic or behenic acid, a dialkyl succinic acid in which the sum of the carbon atoms in the two alkyl radicals is at least six, or sulphated lauryl, oleyl or ricinoleic acid.  The base may be an alkali metal hydroxide, ammonium hydroxide, or an amine such as diethylamine.  At least a part of one or other of the reactants or both of them may be added progressively during the course of the polymerization or the acid may be introduced in solution in vinyl chloride whilst the base is introduced dissolved in the aqueous phase.  Compounds which may be copolymerized with vinyl chloride include vinyl acetate, vinylidene chloride, acrylates and methacrylates, acrylonitrile and methacrylonitrile.  The polymerization may be catalysed by hydrogen peroxide or an alkali-metal or ammonium persulphate, which may be activated by soluble copper salts as described in Specifications 589,264 and 598,777.
Patent GB-396830-A (GB)
Title: Improvements in or relating to electron discharge tubes used for the recording of sounds
IPC: G11B7/00
Filed: 1932-02-22
Abstract: 396,830. Discharge lamps; recording sound. FIDELITY FILMS, Ltd. and CROWTHER, F. K., 174, Wardour Street, London. Feb. 22, 1932, No. 5260. Addition to 364,146. [Class 39 (i). In recording sounds by the discharge lamp of the parent Specification, exposure of the record to the glow at currents up to a predetermined minimum is prevented. A variation across the full width of the record thus corresponds to current variations above this minimum, thus avoiding low working currents near the unstable part of the characteristic of the lamp and near the bottom bend of the characteristic of the valve feeding the lamp. The slot for the glow may be closed at one end and the anode arranged at this end, the record being shielded from the glow along part of the trench at this end. In a modification, Fig. 1, the anode A is arranged in or near a side slot J extending from the centre of the main slot H down one of the insulating pieces B at the sides of the cathode plate C. For increasing currents, the glow extends first along the slot J and then into the slot H. In further modifications in which the main slot H, Fig. 7, is formed between two insulating pieces B on one side of the cathode C, the side slot is formed in one of the pieces B or is replaced by an aperture K extending from the centre of the slot H through the cathode C and through an insulating backing L.
Patent GB-753995-A (GB)
Title: Resilient mounting for rail and like vehicles
Inventor: HIRST ARCHIE JOHN
IPC: B60G11/22
Filed: 1954-02-23
Abstract: 753,995. Axle-bearing guiding arrangements for railway vehicles. METALASTIK, Ltd. Feb. 23, 1955 [Feb. 23, 1954], No. 5260/54. Addition to 720,365. Class 103 (6). In a modification of the invention claimed in Claim 1 of the parent Specification one or more of the rubber blocks 14 of each compound resilient element 12 is or are offset in a vertical direction with respect to the adjacent rubber block or blocks nearer to the axle box 11. Preferably each rubber block is of less height, Fig. 2, and of greater width, Fig. 4, than the rubber block nearer to the axle box. Each resilient element 12 is secured at one end to an adapter block 17 which has a groove 18 to receive a rib 13 of the axle box casting 11 and rests on an adjustable bolt 24. A locking bar 23 is passed through the heads of both bolts. The outer end of each element 12 is received in a pocket-like bracket 16 on the body of the vehicle.
Patent GB-737381-A (GB)
Title: Cam-milling machine
IPC: B23Q35/20
Filed: 1952-02-28
Abstract: 737,381. Milling. GUENTER, K. Feb. 28, 1952 [April 25, 1951], No. 5313/52. Class 83 (3). A cam-milling machine comprises a cutter shaft 1 driven by gears 5 ... 7, and mounted on a swivel-arm formed by a replaceable lever 8 and toggles 3, 4, a link 9 which connects the lever 8 to a replaceable bell-crank 10 having a toothed segment 13 engaging a rack 14, and a pin 16 on the rack-slide 15 engaging a slot 17 in a guide 19 on a slide 20 which is fed transversely in the direction of the arrows II by a disconnectable and reversible drive from the work-spindle 22. The arm 10 of the bell-crank corresponds in length to the roller-carrying arm of the control lever of the machine in which the cam to be milled is used and the lever 8 is made equal in length to the arm 10. To accommodate various lengths of the arm 12, the rack-slide 15 is adjustable transversely or the bell-crank pivot 11 may be mounted on an adjustable slide. For setting the pitch of the cam, the tilt of the guide 19 is adjusted against a scale 18 and the point where the lift begins can be set by adjusting the rack-slide 15 longitudinally by a screw 25, the amount of lift being shown by a scale 23. The work-spindle is adjustable through 90 degrees so that annular or face cams may be milled.
Patent GB-924119-A (GB)
Title: Combustion device for liquid and/or gaseous fuels
IPC: F23D11/00
Filed: 1962-02-12
Abstract: 924,119. Arrangement of burner and combustion chambers. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. Feb. 12, 1962 [Feb. 13, 1961], No. 5321/62. Class 51 (1). A combustion device for liquid or gaseous fuel comprises a burner placed centrally in a bowl-shaped cavity in the wall 1 of a furnace, the cavity being such that (a) the ratio of the smallest diameter d to the largest diameter D is between 0.58 and 0.72; (b) the ratio of the axial length L to the largest diameter D is between 0.45 and 0.55; (c) the angle α between the cavity wall and the inner surface of the furnace wall 1 is between 95 and 100 degrees. The generating line of the cavity is either a circle or a parabola. Air for combustion is fed through a regulator 6 having blades which cause the air to rotate. Further air passes through inlets 7 disposed around the burner and provided with blades which cause rotation of the air in the opposite direction.
Patent GB-912232-A (GB)
Title: Improvements in resilient guiding elements for piston and cylinder devices
IPC: F16J9/00
Filed: 1960-02-15
Abstract: 912,232. Stuffing-box substitutes; pistons. VOLVO A.B. Feb. 15, 1960 [Feb. 18, 1959], No. 5359/60. Classes 122 (1) and 122 (5). A resilient guiding element for a piston is formed with a central radial flange 10, Fig. 2, which is adapted to be movably mounted in a groove between two holders and has segments 11 extending axially from it so as to constitute a resilient cylindrical bearing surface for engagement with either the piston or inner surface of the cylinder, as the case may be. As applied to the hydraulic shock-absorber shown in Fig. 1, the element is mounted with clearance in a groove provided between two holders 3, 4 at the head of the cylinder. The piston element 14, which is similar to the gland element, is mounted in a groove between the two parts 12, 13 of the piston 2. The segments may taper in thickness from the flange to their outer edges. The flexibility of the connection of the segments to the flange enables them to adjust themselves to the surface with which they have relative sliding movement, and, by rounding off the outer edges of the segments adjacent such surface, a liquid film can be built up in operation between this surface and the segments. In the case of the gland and piston arrangements shown in Fig. 1, guidance of the piston-rod and piston is provided solely by the resilient elements.
Patent GB-210303-A (GB)
Title: Improvements in projection lamps
IPC: F21V7/00
Filed: 1923-02-23
Abstract: 210,303. Workman, H. Feb. 23, 1923. Vehicle head lamps.-In a light-projecting lamp, more particularly applicable for use as a vehicle head lamp, adapted to reflect a substantially flat-topped beam of light, the reflector comprises upper and lower half paraboloids with a common axis c, d and approximately a common vertex c, the focus t of the lower half b being situated some distance in front of the focus s of the upper half a. The line source of light e, which may be a single or multiple pillar filament, is of a length not less than half the distance between the two foci and not greater than the distance between them, and is so situated that one end of it is at one focus and it extends along the common axis towards the other focus. In a modification the axis of one or both of the half paraboloids is inclined in a vertical plane about a point substantially midway between the two foci and the line source of light extends approximately from one focus to the other. The upper and lower halves of the reflector may be connected by a square shoulder or the connecting shelf may be inclined and/or have rounded edges. Hyperboloids or ellipsoids approximating to a paraboloid, or a surface made up of a series of surfaces, facets or flutes tangential to a true paraboloid may be employed, and the reflector may be made of plated or polished metal, or of silvered glass. The electric lamp may be mounted by means of the devices described in Specifications 204,464 and 204,774, [both in Class 39 (ii), Electric lamps, Incandescent].
Patent GB-1530402-A (GB)
Title: Dynode for a photomultiplier tube
IPC: H01J43/18
Filed: 1976-01-13
Abstract: 1530402 Electron multiplier SRC LABORATORIES Inc 13 Jan 1976 [24 Jan 1975] 5387/78 Divided out of 1530401 Heading H1D An electron multiplier dynode comprises at least three concentric, equi-radially spaced, frusto-conical electron emissive electrically interconnected annular elements in the same plane. The description relating to the figures corresponds generally to that of the parent Specification.